Distinct Clinic-Pathological Features of Early Differentiated-Type Gastric Cancers after Helicobacter pylori Eradication

Table 1

Clinic-pathological characteristics of EGC lesions among eradication and control groups.

Variables	Eradication group	Control group	p value
	(51 lesions)	(131 lesions)
Median age (range)	74 (53–89)	72 (53–92)	0.29
Male % ()	74.5% (38)	81.7% (107)	0.28
Location: U/M/L % ()	21.6%/41.2%/37.2%	10.7%/40.5%/48.8%	0.12
	(11/21/19)	(14/53/64)
Morphology: protruding/depressed % ()	11.2%/88.2%	42.7%/57.3%	<0.0001
	(6/45)	(56/75)
Color: redness/whiteness/same as surroundings % ()	88.2%/7.8%/3.9%	54.9%/28.2%/16.7%	0.0001
	(45/4/2)	(72/37/22)
Tumor size: ±SE	11.7 ± 1.0 mm	13.5 ± 0.6 mm	0.0095
Depth: M/SM1/SM2 % ()	90.1%/0%/9.9%	90.8%/5.3%/3.8%	0.077
	(46/0/5)	(119/7/5)
Unexpected SM2 case	8.7% (4/46)	2.4% (3/124)	0.0867

Protruding, 0-I and 0-IIa; depressed, 0-IIc, 0-IIa + IIc, and 0-IIc + IIa according to the Japanese classification.
SM1, cases with submucosal invasion less than 500 μm; SM2, cases with submucosal invasion greater than 500 μm.
Patients whose SM2 invasion could not be expected before ESD.
Age and tumor size were compared using Mann-Whitney test.
Location, morphology, color, depth, and unexpected SM2 case were compared using chi statistics.